Filter cartridge

Details Filter cartridge Filter cartridge

2006-12-22

2009-06-30

Prince, Fred (Department: 1797)

Liquid purification or separation

Structural installation

Closed circulating system

C119S259000

Reexamination Certificate

active

07553411

ABSTRACT:
A filter cartridge including a filtering body. The filtering body having a non-horizontal or rounded bottom edge that aids in draining water from the filter cartridge during filter maintenance.

REFERENCES:
patent: 3398836 (1968-08-01), Hugentobler
patent: 3526323 (1970-09-01), Smith
patent: 4894151 (1990-01-01), Woltmann
patent: 5053125 (1991-10-01), Willinger et al.
patent: 5164089 (1992-11-01), Preston
patent: 5630940 (1997-05-01), Van Rossen et al.
patent: 6692637 (2004-02-01), Fox et al.
patent: 7416659 (2008-08-01), Newman
patent: 2003/0085167 (2003-05-01), Fox
patent: WO 2004/052091 (2004-06-01), None
Prime 10, External Self-Priming Power Filter, 4 pages, admitted prior art, exact date unknown.
Renaissance Prime 10/20/30, Self-Priming Canister Filters, 4 pages, admitted prior art, date unknown.
EKIP 250 Thermofilter, Complete Equipment for Aquarium, 7 pages, admitted prior art, date unknown.
RenaissanceBravo 120/200/300, Power Filter System., 6 pages, admitted prior art, date unknown.
Tetra/Second nature, Three-Way Filtration-One Healthy Aquarium, 2 pages, admitted prior art, date unknown.
Photo of Filter Cartridges, admitted prior art, date unknown.

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